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X-ray Imaging and Spectroscopy Mission
Also called XARM


Designation 57800 / 23137A
Launch date 6 Sep 2023
Country of origin Japan
Mission Scientific: X-ray astronomy
Perigee/Apogee 580 km (sun-synchronous)
Inclination 31°
Period 96.1 min
Launch vehicle H2A #65

Built by JAXA to replace Astro H and observe hot gas plasma within galaxy clusters.

Carries 2 instruments:
Resolve: an X-ray spectrometer with two 0.45m telescopes. It's aperture door protesting the detector, causing lower energy protons to be blocked
Xtend: an X-ray imager

Has 2 identical mirrors.

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